providers/implementations/ciphers/cipher_aes_cbc_hmac_sha.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /* Dispatch functions for AES_CBC_HMAC_SHA ciphers */
  11
  12
  13 #include "cipher_aes_cbc_hmac_sha.h"
  14 #include "prov/implementations.h"
  15
  16 #ifndef AES_CBC_HMAC_SHA_CAPABLE
  17 # define IMPLEMENT_CIPHER(nm, sub, kbits, blkbits, ivbits, flags)              \
  18 const OSSL_DISPATCH nm##kbits##sub##_functions[] = {                           \
  19     { 0, NULL }                                                                \
  20 };
  21 #else
  22 # include "prov/providercommonerr.h"
  23
  24 /* TODO(3.0) Figure out what flags are required */
  25 # define AES_CBC_HMAC_SHA_FLAGS (EVP_CIPH_CBC_MODE                             \
  26                                  | EVP_CIPH_FLAG_DEFAULT_ASN1                  \
  27                                  | EVP_CIPH_FLAG_AEAD_CIPHER                   \
  28                                  | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
  29
  30 static OSSL_OP_cipher_freectx_fn aes_cbc_hmac_sha1_freectx;
  31 static OSSL_OP_cipher_freectx_fn aes_cbc_hmac_sha256_freectx;
  32 static OSSL_OP_cipher_get_ctx_params_fn aes_get_ctx_params;
  33 static OSSL_OP_cipher_gettable_ctx_params_fn aes_gettable_ctx_params;
  34 static OSSL_OP_cipher_set_ctx_params_fn aes_set_ctx_params;
  35 static OSSL_OP_cipher_settable_ctx_params_fn aes_settable_ctx_params;
  36 # define aes_gettable_params cipher_generic_gettable_params
  37 # define aes_einit cipher_generic_einit
  38 # define aes_dinit cipher_generic_dinit
  39 # define aes_update cipher_generic_stream_update
  40 # define aes_final cipher_generic_stream_final
  41 # define aes_cipher cipher_generic_cipher
  42
  43 static const OSSL_PARAM cipher_aes_known_settable_ctx_params[] = {
  44     OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_MAC_KEY, NULL, 0),
  45     OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
  46 # if !defined(OPENSSL_NO_MULTIBLOCK)
  47     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT, NULL),
  48     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD, NULL),
  49     OSSL_PARAM_uint(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, NULL),
  50     OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC, NULL, 0),
  51     OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN, NULL, 0),
  52 # endif /* !defined(OPENSSL_NO_MULTIBLOCK) */
  53     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
  54     OSSL_PARAM_END
  55 };
  56 const OSSL_PARAM *aes_settable_ctx_params(void)
  57 {
  58     return cipher_aes_known_settable_ctx_params;
  59 }
  60
  61 static int aes_set_ctx_params(void *vctx, const OSSL_PARAM params[])
  62 {
  63     PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
  64     PROV_CIPHER_HW_AES_HMAC_SHA *hw =
  65        (PROV_CIPHER_HW_AES_HMAC_SHA *)ctx->hw;
  66     EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM mb_param;
  67     const OSSL_PARAM *p, *p1, *pin;
  68     int ret = 1;
  69
  70     p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_MAC_KEY);
  71     if (p != NULL) {
  72         if (p->data_type != OSSL_PARAM_OCTET_STRING) {
  73             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
  74             return 0;
  75         }
  76         hw->init_mac_key(ctx, p->data, p->data_size);
  77     }
  78
  79 # if !defined(OPENSSL_NO_MULTIBLOCK)
  80     p = OSSL_PARAM_locate_const(params,
  81             OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT);
  82     if (p != NULL
  83             && !OSSL_PARAM_get_size_t(p, &ctx->multiblock_max_send_fragment)) {
  84         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
  85         return 0;
  86     }
  87     /*
  88      * The inputs to tls1_multiblock_aad are:
  89      *   mb_param->inp
  90      *   mb_param->len
  91      *   mb_param->interleave
  92      * The outputs of tls1_multiblock_aad are written to:
  93      *   ctx->multiblock_interleave
  94      *   ctx->multiblock_aad_packlen
  95      */
  96     p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD);
  97     if (p != NULL) {
  98         p1 = OSSL_PARAM_locate_const(params,
  99                 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE);
 100         if (p->data_type != OSSL_PARAM_OCTET_STRING
 101             || p1 == NULL
 102             || !OSSL_PARAM_get_uint(p1, &mb_param.interleave)) {
 103             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
 104             return 0;
 105         }
 106         mb_param.inp = p->data;
 107         mb_param.len = p->data_size;
 108         if (hw->tls1_multiblock_aad(vctx, &mb_param) <= 0)
 109             return 0;
 110     }
 111
 112     /*
 113      * The inputs to tls1_multiblock_encrypt are:
 114      *   mb_param->inp
 115      *   mb_param->len
 116      *   mb_param->interleave
 117      *   mb_param->out
 118      * The outputs of tls1_multiblock_encrypt are:
 119      *   ctx->multiblock_encrypt_len
 120      */
 121     p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC);
 122     if (p != NULL) {
 123         p1 = OSSL_PARAM_locate_const(params,
 124                 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE);
 125         pin = OSSL_PARAM_locate_const(params,
 126                    OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN);
 127         if (p->data_type != OSSL_PARAM_OCTET_STRING
 128             || pin == NULL
 129             || pin->data_type != OSSL_PARAM_OCTET_STRING
 130             || p1 == NULL
 131             || !OSSL_PARAM_get_uint(p1, &mb_param.interleave)) {
 132             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
 133             return 0;
 134         }
 135         mb_param.out = p->data;
 136         mb_param.inp = pin->data;
 137         mb_param.len = pin->data_size;
 138         if (hw->tls1_multiblock_encrypt(vctx, &mb_param) <= 0)
 139             return 0;
 140     }
 141 # endif /* !defined(OPENSSL_NO_MULTIBLOCK) */
 142
 143     p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
 144     if (p != NULL) {
 145         if (p->data_type != OSSL_PARAM_OCTET_STRING) {
 146             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
 147             return 0;
 148         }
 149         if (hw->set_tls1_aad(ctx, p->data, p->data_size) <= 0)
 150             return 0;
 151     }
 152
 153     p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
 154     if (p != NULL) {
 155         size_t keylen;
 156
 157         if (!OSSL_PARAM_get_size_t(p, &keylen)) {
 158             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
 159             return 0;
 160         }
 161         if (ctx->base.keylen != keylen) {
 162             ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
 163             return 0;
 164         }
 165     }
 166     return ret;
 167 }
 168
 169 static int aes_get_ctx_params(void *vctx, OSSL_PARAM params[])
 170 {
 171     PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
 172     PROV_CIPHER_HW_AES_HMAC_SHA *hw =
 173        (PROV_CIPHER_HW_AES_HMAC_SHA *)ctx->hw;
 174     OSSL_PARAM *p;
 175
 176 # if !defined(OPENSSL_NO_MULTIBLOCK)
 177     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE);
 178     if (p != NULL) {
 179         size_t len = hw->tls1_multiblock_max_bufsize(ctx);
 180
 181         if (!OSSL_PARAM_set_size_t(p, len)) {
 182             ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 183             return 0;
 184         }
 185     }
 186
 187     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE);
 188     if (p != NULL && !OSSL_PARAM_set_uint(p, ctx->multiblock_interleave)) {
 189         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 190         return 0;
 191     }
 192
 193     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN);
 194     if (p != NULL && !OSSL_PARAM_set_uint(p, ctx->multiblock_aad_packlen)) {
 195         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 196         return 0;
 197     }
 198
 199     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN);
 200     if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->multiblock_encrypt_len)) {
 201         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 202         return 0;
 203     }
 204 # endif /* !defined(OPENSSL_NO_MULTIBLOCK) */
 205
 206     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD);
 207     if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tls_aad_pad)) {
 208         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 209         return 0;
 210     }
 211     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
 212     if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.keylen)) {
 213         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 214         return 0;
 215     }
 216     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
 217     if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.ivlen)) {
 218         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 219         return 0;
 220     }
 221     p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IV);
 222     if (p != NULL
 223         && !OSSL_PARAM_set_octet_string(p, ctx->base.oiv, ctx->base.ivlen)) {
 224         ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
 225         return 0;
 226     }
 227     return 1;
 228 }
 229
 230 static const OSSL_PARAM cipher_aes_known_gettable_ctx_params[] = {
 231 # if !defined(OPENSSL_NO_MULTIBLOCK)
 232     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE, NULL),
 233     OSSL_PARAM_uint(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, NULL),
 234     OSSL_PARAM_uint(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN, NULL),
 235     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN, NULL),
 236 # endif /* !defined(OPENSSL_NO_MULTIBLOCK) */
 237     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
 238     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
 239     OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
 240     OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_IV, NULL, 0),
 241     OSSL_PARAM_END
 242 };
 243 const OSSL_PARAM *aes_gettable_ctx_params(void)
 244 {
 245     return cipher_aes_known_gettable_ctx_params;
 246 }
 247
 248 static void base_init(void *provctx, PROV_AES_HMAC_SHA_CTX *ctx,
 249                       const PROV_CIPHER_HW_AES_HMAC_SHA *meths,
 250                       size_t kbits, size_t blkbits, size_t ivbits,
 251                       uint64_t flags)
 252 {
 253     cipher_generic_initkey(&ctx->base, kbits, blkbits, ivbits,
 254                            EVP_CIPH_CBC_MODE, flags,
 255                            &meths->base, provctx);
 256     ctx->hw = (PROV_CIPHER_HW_AES_HMAC_SHA *)ctx->base.hw;
 257 }
 258
 259 static void *aes_cbc_hmac_sha1_newctx(void *provctx, size_t kbits,
 260                                       size_t blkbits, size_t ivbits,
 261                                       uint64_t flags)
 262 {
 263     PROV_AES_HMAC_SHA1_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
 264
 265     if (ctx != NULL)
 266         base_init(provctx, &ctx->base_ctx,
 267                   PROV_CIPHER_HW_aes_cbc_hmac_sha1(), kbits, blkbits,
 268                   ivbits, flags);
 269     return ctx;
 270 }
 271
 272 static void aes_cbc_hmac_sha1_freectx(void *vctx)
 273 {
 274     PROV_AES_HMAC_SHA1_CTX *ctx = (PROV_AES_HMAC_SHA1_CTX *)vctx;
 275
 276     if (ctx != NULL)
 277         OPENSSL_clear_free(ctx, sizeof(ctx));
 278 }
 279
 280 static void *aes_cbc_hmac_sha256_newctx(void *provctx, size_t kbits,
 281                                         size_t blkbits, size_t ivbits,
 282                                         uint64_t flags)
 283 {
 284     PROV_AES_HMAC_SHA256_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
 285
 286     if (ctx != NULL)
 287         base_init(provctx, &ctx->base_ctx,
 288                   PROV_CIPHER_HW_aes_cbc_hmac_sha256(), kbits, blkbits,
 289                   ivbits, flags);
 290     return ctx;
 291 }
 292
 293 static void aes_cbc_hmac_sha256_freectx(void *vctx)
 294 {
 295     PROV_AES_HMAC_SHA256_CTX *ctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
 296
 297     if (ctx != NULL)
 298         OPENSSL_clear_free(ctx, sizeof(ctx));
 299 }
 300
 301 # define IMPLEMENT_CIPHER(nm, sub, kbits, blkbits, ivbits, flags)               \
 302 static OSSL_OP_cipher_newctx_fn nm##_##kbits##_##sub##_newctx;                 \
 303 static void *nm##_##kbits##_##sub##_newctx(void *provctx)                      \
 304 {                                                                              \
 305     return nm##_##sub##_newctx(provctx, kbits, blkbits, ivbits, flags);        \
 306 }                                                                              \
 307 static OSSL_OP_cipher_get_params_fn nm##_##kbits##_##sub##_get_params;         \
 308 static int nm##_##kbits##_##sub##_get_params(OSSL_PARAM params[])              \
 309 {                                                                              \
 310     return cipher_generic_get_params(params, EVP_CIPH_CBC_MODE,                \
 311                                      flags, kbits, blkbits, ivbits);           \
 312 }                                                                              \
 313 const OSSL_DISPATCH nm##kbits##sub##_functions[] = {                           \
 314     { OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))nm##_##kbits##_##sub##_newctx },\
 315     { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))nm##_##sub##_freectx },        \
 316     { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))nm##_einit },             \
 317     { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))nm##_dinit },             \
 318     { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))nm##_update },                  \
 319     { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))nm##_final },                    \
 320     { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))nm##_cipher },                  \
 321     { OSSL_FUNC_CIPHER_GET_PARAMS,                                             \
 322         (void (*)(void))nm##_##kbits##_##sub##_get_params },                   \
 323     { OSSL_FUNC_CIPHER_GETTABLE_PARAMS,                                        \
 324         (void (*)(void))nm##_gettable_params },                                \
 325     { OSSL_FUNC_CIPHER_GET_CTX_PARAMS,                                         \
 326          (void (*)(void))nm##_get_ctx_params },                                \
 327     { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,                                    \
 328         (void (*)(void))nm##_gettable_ctx_params },                            \
 329     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,                                         \
 330         (void (*)(void))nm##_set_ctx_params },                                 \
 331     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
 332         (void (*)(void))nm##_settable_ctx_params },                            \
 333     { 0, NULL }                                                                \
 334 };
 335
 336 #endif /* AES_CBC_HMAC_SHA_CAPABLE */
 337
 338 /* aes128cbc_hmac_sha1_functions */
 339 IMPLEMENT_CIPHER(aes, cbc_hmac_sha1, 128, 128, 128, AES_CBC_HMAC_SHA_FLAGS)
 340 /* aes256cbc_hmac_sha1_functions */
 341 IMPLEMENT_CIPHER(aes, cbc_hmac_sha1, 256, 128, 128, AES_CBC_HMAC_SHA_FLAGS)
 342 /* aes128cbc_hmac_sha256_functions */
 343 IMPLEMENT_CIPHER(aes, cbc_hmac_sha256, 128, 128, 128, AES_CBC_HMAC_SHA_FLAGS)
 344 /* aes256cbc_hmac_sha256_functions */
 345 IMPLEMENT_CIPHER(aes, cbc_hmac_sha256, 256, 128, 128, AES_CBC_HMAC_SHA_FLAGS)